20666525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{337}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 28164864

約数和(自身を除く): 7498339

約数列:

[1, 5, 11, 25, 55, 223, 275, 337, 1115, 1685, 2453, 3707, 5575, 8425, 12265, 18535, 61325, 75151, 92675, 375755, 826661, 1878775, 4133305, 20666525]

約数ペア:

[(1, 20666525), (5, 4133305), (11, 1878775), (25, 826661), (55, 375755), (223, 92675), (275, 75151), (337, 61325), (1115, 18535), (1685, 12265), (2453, 8425), (3707, 5575)]